I know I could do interdiff myself using the patchutils.I have done it for example for patch-2.4.20-pre4-ac1-ac2.bz2 and it gavethe first reason:

1) patch-2.4.20-pre4-ac1-ac2.bz2 is only 26K (patch-2.4.20-pre4-ac1.bz2 and patch-2.4.20-pre4-ac2.bz2 are both 1.1M), so as AC kernels are very popular, it would reduce bandwight2) One could more easyly watch what has changed3) The time for compilation would be smaller as you modify less files.4) All script on kernel.org are already written for vanilla kernels and I am quiete sure it wouldn't be that hard to include the AC...(5) With my ISDN connection it would be much faster to test those news kernels...).

Thank you very much, and in case of response, don't cc to me, receivingemail once is enough ;-)